Delivery went smoothly, installation has my neighbor hammer out without any problems. Disadvantage: the pull switch. The device is hanging now slightly tilted, characterized scheuiert this Bändel at the opening, becomes thinner and thinner and eventually it breaks. Repair virtually impossible - I had already in another device. This pull could yet make determined from nylon yarn, but then would not buy new more. Otherwise, the device is working properly - nothing to complain on!